Nipple



FIG. 1 is a front view of a nipple embodying my new design, the bottle being shown in dotted lines for illustrative purposes only;

FIG. 2 is a top plan view of the nipple;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a rear view thereof; and

FIG. 5 is a side elevation thereof. 

The ornamental design for a nipple, as shown and described. 